Proven. Accurate. Reliable. Water level meters from 35- to 2,000-feet; coax marked in 5-foot intervals. Engineering, standard and metric scale stainless steel tapes. Bottom sounders from 100- to 300-feet. Complete units, replacement lengths, replacement parts and accessories. Repair and service our own and competitors instruments. Competitive pricing, listed online. Easy to use. Homeowner, public, private, government, driller applications. Small business. Made in the USA over 35 years. Sold globally.